Home / 12,331.61-18,487.80-8,372.43

Finding the Fourth Proportional to 12,331.61, 18,487.80 and 8,372.43

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Solution

The fourth proportional to 12,331.61, 18,487.80 and 8,372.43 is: 12,552.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,331.61 : 18,487.80 = 8,372.43 : x
  2. Step 2: Convert to fraction form
    12,331.61/18,487.80 = 8,372.43/x
  3. Step 3: Cross multiply
    12,331.61x = 18,487.80 × 8,372.43
  4. Step 4: Simplify right side
    12,331.61x = 154,787,677.05
  5. Step 5: Solve for x
    x = 154,787,677.05/12,331.61
  6. Step 6: Final answer
    x = 12,552.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.